DO NOT SUBMIT #3-10, 14, or 15 online. 

#3-10 just describe, do not write a two-column proof.

#14 and 15 write a two-column proof for each. We will review answers tomorrow in class :-) 

Also, Big Ideas did a big site update over the weekend. I got a notification that you should "clear the cache" in your web browser to avoid any submission problems. Please do so BEFORE submitting answers to avoid those problems! But e-mail me with a screenshot if you have any issues.